Do I need to have the ECU reflashed/reprogrammed

1999 DODGE DAKOTA
300 MILES
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LEANNJEFF
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Recently replaced Alternator, battery, and ECU. Now I can not get the truck to start. I have checked the coil and the spark plugs. I am getting spark at both places. The truck acts as though I am not getting fuel. Do I need to have the ecu reprogrammed.
Jul 1, 2012 at 8:13 PM
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LEANNJEFF
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there are 300k mile on my truck
Jul 1, 2012 at 8:14 PM
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SATURNTECH9
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Is this a new or used ecm you out in?
Jul 1, 2012 at 8:18 PM
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LEANNJEFF
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It is a used Ecm...
Jul 2, 2012 at 2:15 AM
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SATURNTECH9
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Is it from the same year make model engine size part number etc?
Jul 2, 2012 at 2:19 AM
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LEANNJEFF
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The part number match from the ECM I removed to the ECM that I re-installed.
Jul 2, 2012 at 2:42 AM
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SATURNTECH9
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Is there a security light the dash?
Jul 2, 2012 at 4:00 AM
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LEANNJEFF
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I think so... if there is would that be a reason for the truck not starting???
Jul 4, 2012 at 2:13 AM
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SATURNTECH9
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Sure if the security lights on or flash the anti theft is on.
Jul 4, 2012 at 2:49 AM